"Jack of all trades but master of none"

All my life i thought being the Jack of all trades but master of none is a bad thing i.e. I'm not Perfect at any thing unlike others.
Until i came to know the whole phrase which is
"Jack of all trades but master of none, but better than a master of one".
It means being average in everything is better than being perfect in just one thing and sucking in all the others.

So for those who thinks the same that you're not Perfect then guess what Perfection isn't the goal. Goal is what you are and what you can do the best.
The best version of you is the Goal.
Thus, what needs to be achieved is Your Best Version.